In a recent letter to her mother posted on Reddit, Williams talked about her powerful physique and wrote, “I was looking at my daughter (OMG, yes, I have a daughter) and she has my arms and legs! My exact same strong, muscular, powerful, sensational arms and body.”

“It has been said I don’t belong in Women’s sports — that I belong in Men’s — because I look stronger than many other women do. (No, I just work hard and I was born with this badass body and proud of it),” she wrote.